Floor brush assembly and cleaning equipment thereof

ABSTRACT

A floor brush assembly and cleaning equipment with the floor brush assembly for cleaning surfaces to be cleaned. The forward direction of the floor brush assembly is the front and the opposite direction is the back. The floor brush assembly comprises a floor brush base, a roller brush with a roller being arranged on the floor brush base, and a second scraping piece which is arranged on the bottom of the floor brush base and in front of the roller brush and is provided with at least two second bumps distributed at intervals along its length direction. At least the roller brush abuts on the surface to be cleaned when the roller brush abuts on the surface to be cleaned, with a second channel for dirt passing through being formed between the adjacent second bumps to make dirt reach the suction inlet of the floor brush base.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of Chinese Patent ApplicationNo. 202210208087.6 filed on Mar. 3, 2022, the contents of which areincorporated herein by reference in their entirety.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention generally relates to a floor washing machine andmore particularly to a cleaning device with a brush assembly.

2. Description of Related Art

As people have higher requirements on cleaning and cleaning technologiesimprove constantly, various scrubbers come up with specific functionsfor floors covered by tiles, marbles and other hard materials.Typically, the scrubbers work with a motor which drives rotation of theroller brush to clean the floor. When the roller brush rotates, cleanwater flows out from the roller brush. In this way, the scrubbers washand brush the floor at the same time and any dirty, grease and impuritywill be cleared away. Then the brush bar and the vacuum suction inletwill suck in the sewage after cleaning.

However, for the existing floor scrubbers, when they move forward, it isrequired to turn up or lift up the floor brush assembly until thescraping bar on front of the floor brush assembly moves across therubbish on the floor in the front to make the rubbish reach the front ofthe roller brush and be cleared away. The floor scrubbers havedisadvantages in inconvenient use and unsatisfactory cleaningperformance. Therefore, it is necessary to improve the existingtechnology and overcome the shortcomings therein.

So, an improved cleaning device is needed.

SUMMARY OF THE INVENTION

The technical issue to be solved by the present invention is to providea floor brush assembly with satisfactory cleaning performance andconvenient use, and cleaning equipment with the assembly.

A floor brush assembly for cleaning surfaces to be cleaned, with theforward direction of the floor brush assembly being the front and theopposite direction being the back. The floor brush assembly comprises afloor brush base, a roller brush with a roller being arranged on thefloor brush base, and a second scraping piece which is arranged on thebottom of the floor brush base and in front of the roller brush and isprovided with at least two second bumps distributed at intervals alongits length direction. At least the roller brush abuts on the surface tobe cleaned when the floor brush assembly moves forward and the intervalbetween the adjacent second bumps forms a second channel for dirtpassing through so that dirt reaches the suction inlet of the floorbrush base.

Preferably, the bottom surface of the second bumps abuts on the surfaceto be cleaned when the floor brush assembly moves forward.

Preferably, the second scraping piece comprises the second scrapingpiece body arranged on the bottom of the floor brush base and the secondbumps distributed at intervals on the second scraping piece body whichis provided with a second mounting part on the side away from thesurface to be cleaned to connect with the floor brush base and a secondabutting part to abut on the surface to be cleaned, with the secondabutting part and the second mounting part being distributed oppositely;wherein the second scraping piece body swings backward under externalforce so that the second bumps abut on the surface to be cleaned and thesecond scraping piece is in the fourth state at the moment when thefloor brush assembly moves forward; wherein the second scraping piecebody swings forward under external force so that the second abuttingpart abuts on the surface to be cleaned and the second scraping piece isin the third state at the moment when the floor brush assembly movesbackward.

Preferably, the second scraping piece body is sheet-shaped and isprovided with the third face close to the roller brush and the fourthface away from the roller brush, with the second bumps being arranged onthe fourth face; wherein the second abutting part is provided with anabutting face to abut on the surface to be cleaned and the abutting faceof the second abutting part can be either the third face or the faceadjacent to the bottom between the third face and the fourth face.

Preferably, the second scraping piece is made from deformable materials,wherein the external force is the friction between the second scrapingpiece body and the surface to be cleaned; or, the second scraping pieceis made from hard materials, wherein the external force is from thedriver on the floor brush base, which is configured to facilitateswitching of the second scraping piece between the third state and thefourth state.

Preferably, when the second scraping piece is made from deformablematerials, the floor brush base is provided with an extension baffle onfront of the second scraping piece, wherein the bottom edge of theextension baffle is lower than the second mounting part; when the floorbrush assembly moves backward, the second bumps abut on the bottom edgeof the extension baffle; wherein the extension baffle is configured toexert pressure down to the second scraping piece in the third state soas to make the second scraping piece abut on the surface to be cleanedtightly.

Preferably, when the second scraping piece is made from hard materials,the second scraping piece is hinged to the bottom of the floor brushbase through the second mounting part.

Preferably, the floor brush base is provided with stop blocks to limitthe swing angle of the second scraping piece; wherein the stop blocksare one pair, with one of the stop blocks being arranged on the floorbrush base and on the side of the second mounting part away from theroller brush to limit the swing angle when the second scraping pieceswings forward and the other stop block being arranged on the floorbrush base and on the side of the second mounting part close to theroller brush to limit the swing angle when the second scraping pieceswings backward; or, wherein the number of the stop block is one whichis provided with the second limitation face close to the roller brushand the first limitation face away from the roller brush; when thesecond scraping piece swings forward, the second scraping piece abuttingon the first limitation face; when the second scraping piece swingsbackward, the second scraping piece abutting on the second limitationface.

Preferably, the floor brush assembly comprises the first scraping piecewhich is arranged on the bottom of the floor brush base, with a suctioninlet being formed between the first scraping piece and the rollerbrush; wherein the first scraping piece abuts on the surface to becleaned to scrape off dirt when the floor brush assembly moves forwardand/or backward.

Preferably, the floor brush assembly comprises the first scraping piecewhich is arranged on the bottom of the floor brush base and behind theroller brush, with a suction inlet being formed between the firstscraping piece and the roller brush and with at least two first bumpsbeing arranged on the face away from the roller brush and distributed atintervals on the length direction of the first scraping piece; whereinthe second scraping piece abuts on the surface to be cleaned and thefirst bump abuts on the surface to be cleaned when the floor brushassembly moves backward, with a first channel for dirt passing throughbeing formed between the adjacent first bumps to make dirt reach thesuction inlet.

Preferably, the first and auxiliary rollers are arranged on the bottomof the floor brush base and the second scraping piece and first scrapingpiece remain suspended in natural state; wherein the bottom edges of thesecond scraping piece and the first scraping piece are lower than thelowest side of the first and auxiliary rollers when the second scrapingpiece and the first scraping piece are in natural state.

Preferably, the floor brush base comprises the main base and thedetachable roller brush cover on the main base, which form a rollerbrush cavity to hold the roller brush; the sealing element is arrangedbetween the roller brush cover and the main base, on the top of theroller brush cover and/or the main base and on the top of the rollerbrush cavity for reducing or eliminating the gap between the main baseand the roller brush cover so as to enhance the sealing performance ofthe top of the roller brush cavity.

Preferably, the first scraping piece and the second scraping piece abuton the surface to be cleaned when the floor brush assembly movesbackward, with a seal structure being formed jointly by the firstscraping piece, the second scraping piece and the sealing component toimprove the vacuum degree of the roller brush cavity.

Preferably, the sealing component is arranged on the inner side of theroller brush cover and close to the roller brush; wherein the sealingcomponent extends along the circumferential direction of the rollerbrush.

Preferably, the second scraping piece is arranged on the inner side ofthe roller brush cover and comprises a second mounting part which isarranged on the side of the second scraping piece body away from thesurface to be cleaned; with an insertion part being arranged on theinner side of the roller brush cover to match with the second mountingpart and the second scraping piece being installed on the inner side ofthe roller brush cover by the second mounting part matching with theabutting part.

The present invention provides a cleaning equipment, comprising the saidfloor brush assemblies.

The technical solution provided by the present invention has thefollowing advantages:

A second channel for dirt passing through is formed between multiplesecond bumps provided in the present invention, through which the dirtin front of the floor brush assembly can be wiped out by the rollerbrush and sucked into the suction inlet, to avoid the dirt being movedforward by the floor brush assembly to form a line of dirt, which hasthe advantage of good cleaning effect; meanwhile, the floor brushassembly can be prevented from being lifted up repeatedly, which has theadvantage of convenient use; When the floor brush assembly movesforward, the first scraping piece is designed to scrape the floor onwhich the water stain can be sucked into the suction inlet, thusobviously reducing water stain on the floor, which has the advantage ofgood cleaning performance.

Other objects, advantages and novel features of the present inventionwill become more apparent from the following detailed description of thepresent embodiment when taken in conjunction with the accompanyingdrawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the floor brush assembly according tothe invention;

FIG. 2 a schematic diagram of the breakdown structure as shown in FIG. 1;

FIG. 3 is a schematic diagram of the second scraping piece under thefirst viewing angle according to the invention;

FIG. 4 is an enlarged view of part C as shown in FIG. 3 ;

FIG. 5 is a schematic diagram of the position relation between theroller brush cover and the second scraping piece according to theinvention;

FIG. 6 is a schematic diagram of the second scraping piece under thesecond viewing angle according to the invention;

FIG. 7 is a schematic diagram of the first scraping piece under thefirst viewing angle according to the invention;

FIG. 8 is a schematic diagram of the first scraping piece under thesecond viewing angle according to the invention;

FIG. 9 is an enlarged view of part A as shown in FIG. 8 ;

FIG. 10 is a schematic diagram of the first scraping piece under thethird viewing angle according to the invention;

FIG. 11 is an enlarged view of part B as shown in FIG. 10 ;

FIG. 12 is a schematic diagram of the position relation between theroller brush cavity and the suction inlet according to the invention;

FIG. 13 is a schematic diagram with one pair of stop blocks according tothe invention;

FIG. 14 is a schematic diagram with one stop block according to theinvention.

DETAILED DESCRIPTION OF THE INVENTION

Reference will now be made to the drawing figures to describe thepreferred embodiment of the present invention in detail.

Referring to FIG. 1 to FIG. 14 , a floor brush assembly 100 is providedfor cleaning surfaces to be cleaned according to the present invention,with the forward direction of the floor brush assembly 100 being thefront and the opposite direction being the back, comprising a floorbrush base, a roller brush 110 and a second scraping piece 300; whereinthe second scraping piece 300 is arranged on the bottom of the floorbrush base and in front of the roller brush 110 with a roller beingarranged on the floor brush base.

In a reference scenario, the floor brush assembly 100 can be applied tofloor scrubbers for floor cleaning. It should be noted that theapplication of the floor brush assembly 100 in scrubbers in the scenariois a feasible applicable scenario for the floor brush assembly 100. Inother feasible and unclear scenarios, the floor brush assembly 100 canbe applied to handheld vacuum cleaners.

The following describes the application of the floor brush assembly 100in scrubbers. The surface to be cleaned is the floor. However, based onthe above description, no limitation on the scope of protection of theembodiment of the invention is constituted.

In the embodiment, the floor brush base comprises the main base 120 andthe detachable roller brush cover 130 on the main base 120, which form aroller brush cavity 160 to hold the roller brush 110. A detergentfeeding unit (not shown in the Figures) for moisturizing the rollerbrush 110 and a fluid scraping unit with an outer circular face forsqueezing the roller brush 110 to make the sewage absorbed by the rollerbrush 110 drop down and be sucked into the suction inlet (not shown inthe Figures) are arranged on the main base 120. Specifically, when thefloor brush assembly 100 is working, the roller brush 110 will rotate ina high speed under the drive of the motor built in the floor brushassembly 100 and take the dirt on the floor below the roller brush 110into the suction inlet; meanwhile, after being moisturized by thedetergent feeding unit, the roller brush 110 will brush the floor tocomplete the cleaning task.

Referring to FIG. 3 and FIG. 4 , the second scraping piece 300 extendsaxially along the roller brush 110 is provided with at least two secondbumps 310 distributed at intervals along its length direction; whereinthe number of the second bumps 310 can be two, three or more accordingto the size of the floor brush base.

In the embodiment, at least the roller brush 110 abuts on the floor whenthe floor brush assembly moves forward, with the second channel H2 fordirt passing through being formed between the adjacent second bumps 310to make dirt reach the suction inlet of the floor brush base withoutturning up the front of or lifting up the floor brush assembly.Therefore, a line of dirt will not appear along the front of the secondscraping piece 300 when the floor brush assembly 100 moves forward.

Wherein the description, “at least the roller brush 110 abuts on thefloor when the floor brush assembly moves forward”, means that theroller brush 110 abuts on the floor and the second bumps 310 do not abuton the floor, or the roller brush 110 and the second bumps 310 abut onthe floor.

Preferably, the bottom surface of the second bumps 310 abuts on thesurface to be cleaned when the floor brush assembly moves forward. Inother words, the roller brush 110 and the second bumps 310 abut on thefloor. Therefore, when the second channel H2 formed by the secondscraping piece 300 allows dirt to pass through, the dirt on the floorcan be scraped off on the bottom surface of the second bumps 310, withgood cleaning performance.

Referring to FIG. 3 and FIG. 6 , the second scraping piece 300 comprisesthe second scraping piece body 301 on the bottom of the floor brush baseand the second bumps 310 distributed at intervals on the second scrapingpiece body 301; wherein the second bumps 310 are distributed atintervals along the length direction of the second scraping piece body301. “Interval” refers to equal interval, random interval or regularinterval.

Additionally, the second scraping piece body 301 is provided with thesecond mounting part 320 for connecting with the floor brush base on thetop (away from the floor) of the second scraping piece body 301 and thesecond abutting part to abut on the floor, with the second abutting partand the second mounting part 320 being distributed oppositely.

In the embodiment, the second scraping piece body 301 swings backwardunder external force so that the second bumps 310 abut on the floor andthe second scraping piece 300 is in the fourth state at the moment whenthe floor brush assembly moves forward; the second scraping piece body301 swings forward under external force so that the second abutting partabuts on the floor and the second scraping piece 300 is in the thirdstate at the moment when the floor brush assembly moves backward. As canbe seen from the above description, under external force, the secondscraping piece 300 can switch between the third state and the fourthstate.

In the embodiment, materials of the second scraping piece 300 have animpact on the type of the external force. Specifically, when the secondscraping piece 300 is made from deformable materials, the external forceis the friction between the second scraping piece body 301 and thefloor. When the floor brush assembly moves forward, the second scrapingpiece body 301 swings backward with the second mounting part 320 as thepivot under the impact of the friction; when the floor brush assemblymoves backward, the second scraping piece body 301 swings forward withthe second mounting part 320 as the pivot under the impact of thefriction.

When the second scraping piece 300 is made from hard materials, theexternal force is from the driver on the floor brush base (not shown inthe Figures), which is configured to facilitate switching of the secondscraping piece 300 between the third state and the fourth state.

It should be noted that the hard materials refer to the materials thatcannot be deformed by external force. The deformable materials refer tothe materials that can be deformed by external force.

In the embodiment, preferably, the second scraping piece 300 is madefrom deformable materials; wherein “the second scraping piece 301 ismade from deformable materials” means that the second scraping piecebody 301 and the second bumps 310 are made from deformable materials.The deformable materials can be rubber and silicone, which can bedeformed under the impact of friction.

Specifically, to produce deformation, the deformable materials areadopted for the second scraping piece body 301; to avoid the floor beingscraped and damaged, the deformable materials are adopted for the secondbumps 310. Additionally, the second scraping piece body 301 and thesecond bumps 310 are made from the same materials for production andmanufacturing convenience. Understandably, the second scraping piecebody 301 and the second bumps 310 can be made from different deformablematerials. For example, the scraping piece 200 is made from rubber whilethe second bumps 310 are made from silicone. However, no limitation onthe scope of protection of the embodiment of the invention isconstituted.

Additionally, the second scraping piece body 301 is sheet-shaped and isprovided with the third face 3011 close to the roller brush 110 and thefourth face 3012 away from the roller brush 110, with the second bumps310 being arranged on the fourth face 3012. In other words, the thirdface 3011 and the fourth face 3012 are on the opposite side and thesecond bumps 310 are on the face away from the roller brush 110.

In the embodiment, the second abutting part is provided with an abuttingface to abut on the floor and the abutting face of the second abuttingpart can be either the third face 3011 or the face adjacent to thebottom between the third face 3011 and the fourth face 3012; wherein thepreferred abutting face of the second abutting part is the third face3011 for the reason that when the abutting face with the secondconnection part is the third face 3011, the second scraping piece body301 can touch the floor more tightly. When the floor brush assembly 100moves backward, the water stain and dirt on the floor can be pushedtowards the roller brush 110 more effectively. In other words, when thefloor brush assembly 100 moves backward, the water stain and dirt on thefloor can be effectively reduced.

Referring to FIG. 1 and FIG. 5 , to further improve the cleaning abilityof the second scraping piece 300 when the floor brush assembly 100 movesbackward, the extension baffle 133 is arranged on the floor brush base.In the embodiment, the extension baffle 133 is arranged on the bottom ofthe roller brush cover 130, which is configured to exert pressure downto the second scraping piece 300 in the third state so as to make thesecond scraping piece 300 abut on the floor tightly.

Specifically, the extension baffle 133 is in front of the secondscraping piece 300, with the bottom edge of the extension baffle 133lower than the second mounting part 320. When the floor brush assembly100 moves backward (in the third state), the second bumps 310 of thesecond scraping piece 300 abut on the bottom edge of the extensionbaffle 133 under which the second scraping piece body 301 can’t swingforward; meanwhile, the extension baffle 133 exerts pressure down to thesecond scraping piece body 301 and can make the second scraping piecebody 301 tightly abut on the floor and effectively enhance the scrapingforce of the second scraping piece body 301 to the floor, thus scrapingthe water stain and dirt on the floor and improve the sealingperformance of the roller brush 110 to some extents.

In the embodiment, the second bumps 310 are block-shaped, with thesecond friction face 311 on the side away from the second scraping piecebody 301. When the second scraping piece 300 is in the fourth state, thesecond friction face 311 is the bottom surface of the second bumps 310and abuts on the floor; wherein the second friction face 311 can beeither flat, cambered, polygonal or curved.

In the embodiment, the distance between the second friction face 311 andthe second scraping piece body 301 is defined as L2 which determines theheight of the second channel H2. The height of the second channel H2determines the size of dirt which passes through the second channel H2,especially the height of the dirt.

Specifically, L2 should be no shorter than 3 mm and no longer than 10mm, wherein L2 can be any value like 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm,9 mm and 10 mm or any value between 3 mm and 10 mm with an increment of0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm or 0.9mm.

Additionally, the second bumps 310 is provided with an adjacent facethat overlaps with the fourth face 3012 and the side enclosure face 312that connects the second friction face 311 and the adjacent face;wherein the adjacent face is the topside of the second bumps 310 whenthe second scraping piece 300 is in the fourth state; the side enclosureface 312 abuts on the extension baffle 133 when the second scrapingpiece 300 is in the third state.

Referring to FIG. 4 , the area of the adjacent face is larger than thearea of the second friction face 311. It is designed to make the secondbumps 310 narrow at the bottom and wide on the top so that dirt can passthrough easily when the second scraping piece 300 is in the fourthstate. Additionally, if the area of the second friction face 311 islarger and the second scraping piece 300 is in the fourth state, thefriction between the second friction face 311 and the floor is large,giving larger resistance against the forward movement of the floor brushassembly 100, which is not good for operation of the floor brushassembly 100. The adjacent face is the face that connects the secondscraping piece body 301. If the area of the adjacent face is larger, theconnection intensity between the second bumps 310 and the secondscraping piece body 301 can be enhanced, making the connection morestable and secured.

When the second scraping piece 300 is made from deformable materials,the second mounting part 320 is fixed to the floor brush base. Themethods for fixing include screws, buckles, glue, or welding.

Specifically, in the embodiment, the second scraping piece 300 isarranged on the inner side of the roller brush cover 130; wherein aninsertion part is arranged on the inner side of the roller brush cover130 to match with the second mounting part 320 and the second scrapingpiece 300 is installed on the inner side of the roller brush cover 130by the second mounting part 320 matching with the abutting part; whereinthe insertion part 320 and the matching part are a fixture block and aslot; wherein the second mounting part 320 is integrate with the secondscraping piece body 301, which reduces the quantity of parts,streamlines processing and brings advantages in simple and compactstructure.

In the embodiment, when the second scraping piece 300 is made from hardmaterials, the second scraping piece 300 is hinged to the floor brushbase through the second mounting part 320; wherein the driver connectswith the second scraping piece body 301, and the second scraping piecebody 301 can rotate around the hinge axis under the drive of the driver;wherein the driver can be air cylinder or any other structure that movesrepeatedly in linear.

Specifically, when the floor brush assembly 100 moves forward, thesecond scraping piece body 301 swings backward with the hinge axis ofthe second scraping piece 300 as the rotational pivot under the force ofthe driver; when the floor brush assembly 100 moves backward, the secondscraping piece body 301 swings forward with the hinge axis of the secondscraping piece 300 as the rotational pivot under the force of thedriver.

To limit the swing angle of the second scraping piece 300, the stopblock 400 is arranged on the floor brush base. Referring to FIG. 13 andFIG. 14 , the number of the stop block 400 can be one pair or one. Whenthe stop blocks 400 are one pair, as shown in FIG. 13 , one stop block400 is arranged on the floor brush base and on the side of the secondmounting part 320 away from the roller brush 110 to limit the swingangle when the second scraping piece 300 swings forward and the otherstop block is arranged on the floor brush base and on the side of thesecond mounting part 320 close to the roller brush 110 to limit theswing angle when the second scraping piece 300 swings backward.

When the number of the stop block 400 is one, by referring to FIG. 14 ,the stop block 400 is provided with the second limitation face 420 closeto the roller brush 110 and the first limitation face 410 away from theroller brush 110. When the second scraping piece 300 swings forward, thesecond scraping piece 300 abuts on the first limitation face 410; whenthe second scraping piece 300 swings backward, the second scraping piece300 abuts on the second limitation face 420.

When the second scraping piece 300 is hinged to the bottom of the floorbrush base through the second installation part 320, the two settingsolutions for the second mounting part 320 are as below.

In one setting solution, by referring to FIG. 14 , the second mountingpart 320 is a slot, with the axis body 500 being arranged on the bottomof the floor brush assembly 100 to match with the slot of which thecircumferential slot wall is provided with an opening for the axis body500. Wherein the axis of the axis body 500 extends along the lengthdirection of the second scraping piece 300 and the center line of theslot extends along the length direction of the second scraping piece300, with coaxial distribution of the axis of the axis body 500 and thecenter line of the slot.

In the other setting solution, the second mounting part 320 is a pinshaft, with a pin shaft hole being arranged on the bottom of the floorbrush assembly 100 to match with the pin shaft (not shown in theFigures).

Understandably, the setting solutions of the second mounting part 320include but not limited to the two setting solutions and include otherstructures that enable the second scraping piece 300 rotate on the floorbrush assembly 100, and are repeated here.

In the embodiment, by referring to FIG. 1 and FIG. 12 , the floor brushassembly 100 includes the first scraping piece 200 that extends alongthe axial direction of the roller brush 110 and is arranged on thebottom of the floor brush base and behind the roller brush 110. Thesuction inlet 170 of the floor brush base is formed between the firstscraping piece 200 and the roller brush 110. When the floor brushassembly 100 is working, the first scraping piece 200 abuts on to scrapeoff the dirt. The working process includes forward movement, backwardmovement and forward and backward movement.

In the embodiment, the first scraping piece 200 has two structures: Forthe first structure, the first scraping piece 200 is sheet-shaped. Whenthe floor brush assembly 100 moves forward or backward, the firstscraping piece 200 abuts on the floor to scrape off the dirt.; for thesecond structure, by referring to FIG. 6 to FIG. 11 , at least two firstbumps 210 are distributed at intervals on the side of the first scrapingpiece 200 away from the roller brush 11 and along the length directionof the first scraping piece 200 and the interval between the adjacentfirst bumps 210 forms the first channel H1 for dirt passing through sothat dirt reaches the suction inlet 170.

The difference between the first structure and the second structure isthe first bumps 210. Specifically, in the first structure, no firstbumps 210 is arranged on the first scraping piece 200; in the secondstructure, the first bumps 210 is arranged on the first scraping piece200. By setting the first bumps 210, when the floor brush assembly 100moves backward, dirt on the side of the first scraping piece 200 awayfrom the suction inlet 170 can pass through the first scraping piece 200and be sucked into the suction inlet to avoid a line of dirt on the sideof the first scraping piece 200 away from the suction inlet 170.

The following describes the situation where the first bumps 210 isarranged on the first scraping piece 200. Referring to FIG. 10 and FIG.11 , the first scraping piece 200 comprises the first scraping piecebody 201 on the floor brush base and the first bumps 210 on the firstscraping piece body 201. Wherein the first scraping piece body 201 issheet-shaped along which the first bumps 210 are distributed atintervals.

[The first scraping piece body 201 is provided with the first mountingpart 230 on the top of the first scraping piece body 201 (away from thefloor) to connect with the floor brush base and a first abutting part toabut on the floor, with the first abutting part and the first mountingpart 230 being distributed oppositely.

In the embodiment, the first scraping piece body 201 swings forwardunder external force so that the first bumps 210 abut on the floor andthe first scraping piece 200 is in the second state at the moment whenthe floor brush assembly 100 moves backward; the first scraping piecebody 201 swings backward under external force so that the first abuttingpart abuts on the floor and the first scraping piece 200 is in the firststate at the moment when the floor brush assembly 100 moves forward. Ascan be seen from the above description, under external force, the firstscraping piece 200 can switch between the first state and the secondstate.

In the embodiment, materials of the first scraping piece 200 have animpact on the type of the external force. When the first scraping piece200 is made from deformable materials, the external force is thefriction between the first scraping piece body 201 and the floor; whenthe first scraping piece 200 is made from hard materials, the externalforce is from the driver on the floor brush base (not shown in theFigures), which is configured to facilitate switching of the firstscraping piece 200 between the first state and the second state.

When the first scraping piece 200 is made from deformable materials, thefirst mounting part 230 is fixed to the floor brush base. The methodsfor fixing include screws, buckles, glue, or welding. When the firstscraping piece 200 is made from hard materials, the first mounting part230 is hinged to the floor brush base. With the external force from thedriver, the first scraping piece 200 can rotate round the hinge axle.When the first scraping piece 200 is made from hard materials, refer tothe structure of the second mounting part 320 for the structure of thefirst mounting part 230.

In the embodiment, preferably, the first scraping piece 200 is made fromdeformable materials. Wherein “the first scraping piece 201 is made fromdeformable materials” means that the first scraping piece body 201 andthe first bumps 210 are made from deformable materials. The deformablematerials can be rubber and silicone, which can be deformed under theimpact of friction. The description below is based on the situationwhere the first scraping piece 200 is made from deformable materials.

Referring to FIG. 7 , the first scraping piece body 201 is provided withthe first face 2011 close to the roller brush 110 and the second face2012 away from the roller brush 110. In other words, the first face 2011and the second face 2012 are on the opposite side and the first bumps210 are on the second face 2012.

Additionally, the first abutting part is provided with an abutting faceto abut on the floor and the abutting face of the first abutting partcan be either the first face 2011 or the face adjacent to the bottombetween the first face 2011 and the second face 2012.

Preferably, the abutting face of the first abutting part is the firstface 2011. When the first face 2011 abuts on the floor, the firstscraping piece body 201 has large deformation so that the first scrapingpiece body 201 can touch the floor more tightly, so that the water stainand dirt on the floor can be pushed towards the suction inlet and theroller brush 110 more effectively, thus reducing the water stain anddirt on the floor to the greatest extent.

Referring to FIG. 7 , FIG. 8 and FIG. 9 , when the abutting face of thefirst abutting part is the first face 2011, the scraping bar 220 isarranged along the length direction of the first face 2011 and bulgesout on the first face 2011 for the purpose of scrappaging off stubborndirt on the floor. Setting the scraping bar 220 can enhance thestructural intensity of the first scraping piece body 201 on thescraping bar 220. Therefore, compared with other areas, the area wherethe first scraping piece body 201 is on the scraping bar 220 will notdeform easily so that the scraping bar 220 can touch the floor moretightly to scrape off the stubborn dirt on the floor.

Specifically, the outer surfaces of the scraping bar 220 comprise thethird friction face 221 and the extension face 222 and are faces whichdon’t overlap with the first face 2011. In the embodiment, the extensionfaces 222 is on a position farther away from the bottom edge of thescraping bar 220 than the third friction face 221. In the first state,the third friction face 221 of the scraping bar 220 abuts on the floorwhile the extension faces 222 is away from the floor.

Wherein the third friction face 221 abuts on the floor for floorscraping; a space is formed with the extension face 222 gradually awayfrom the floor to help the dirt be sucked into the suction inlet.

In the embodiment, when the first scraping piece 200 is in the firststate and the abutting face of the first abutting part is the first face2011, at least the scraping bar 220 abuts on the floor. Understandably,there are two scenarios. In the first scenario, when the first scrapingpiece 200 is in the first state and the abutting face of the firstabutting part is the first face 2011, the scraping bar 220 abuts on thefloor; in the second scenario, when the first scraping piece 200 is inthe first state and the abutting face of the first abutting part is thefirst face 2011, the scraping bar 220 and the first face 2011 abut onthe floor.

In the embodiment, by referring to FIG. 11 , the first bump 210 has thefirst friction face 211 on the side away from the first scraping piecebody 201. When the first scraping piece 200 is in the second deformationstate, the first friction faces 211 abuts on the floor. Wherein thedistance between the first friction face 211 and the first scrapingpiece body 201 is defined as L1 which determines the height of the firstchannel H1.

When the floor brush assembly 100 moves forward, the dirt on the floorreach the roller brush 110 through the second channel H2, is pushed bythe roller brush 110 and sucked into the suction inlet 170; meanwhile,the first abutting part of the first scraping piece 200 abuts on thefloor so as to scrape off water stain and dirt on the floor behind theroller brush 110. In the process, the first scraping piece 200 is mainlyused to scrape off the water stain on the floor. “The first scrapingpiece 200 is mainly used to scrape off the water stain on the floormeans that when the floor brush assembly 100 moves forward, most of thedirt are sucked into the suction inlet and only few minor dirt is lefton the floor. Therefore, the first scraping piece 200 is mainly used toscrape off and reduce the water stain on the floor.

Specifically, when the floor brush assembly 100 moves forward, the firstscraping piece 200 can push the water stain on the floor forward.Therefore, the water stain will be either sucked into the suction inletor absorbed by the roller brush 110, thus reducing water stain on thefloor and effectively improving the cleaning performance.

When the floor brush assembly 100 moves backward, the second abuttingpart of the second scraping piece 300 abuts on the floor to scrape offany dirt on the floor. The first bump 210 abuts on the floor and thefirst channel H1 allows the dirt (mainly water stain) to pass through.In the process, the first channel H1 is mainly used for water stainpassing through for the reason that when the floor brush assembly 100moves backward, the floor has been cleaned and mainly water stain is onthe floor.

The first channel H1 is mainly used for water stain passing through, theheight L1 of the first channel H1 should be lower than the height L2 ofthe second channel H2. In the embodiment, the height L1 of the firstchannel H1 should be no larger than 1 mm. In the embodiment, L1 (heightof the first channel H1) can be any value like 0.5 mm or 1 mm, or anyvalue between 0.1 mm and 1 mm with an increment of 0.1 mm, 0.2 mm, 0.3mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm or 0.9 mm.

In the embodiment, the second bumps 310 are distributed along the bottomedge of the second scraping piece body 301 and the first bumps 210 aredistributed along the bottom edge of the first scraping piece body 201.To be more clearly, the description below will take the second bumps 310as an example. When the second bumps 310 are distributed along thebottom edge of the second scraping piece body 301, in the fourth state,an enough gap between the bottom edge of the second scraping piece body301 and the floor is provided for dirt passing through.

Oppositely, when the second bumps 310 are not distributed along thebottom edge of the second scraping piece body 301, in the fourth state,the bottom edge of the second scraping piece body 301 will be close tothe floor. In the case, the gap between the bottom edge of the secondscraping piece body 301 and the floor becomes smaller, influencing dirtpassing through.

The first roller 140 and the auxiliary roller 150 are arranged on thebottom of the floor brush base. When the floor brush assembly 100 ispushed forward, the floor brush assembly 100 will move forward with thehelp of the first roller 140 and the auxiliary roller 150.

When the floor brush assembly 100 is lifted up, the second scrapingpiece 300 and the first scraping piece 200 are suspended; meanwhile, thesecond scraping piece 300 and the first scraping piece 200 are in thenatural state.

When the second scraping piece 300 and first scraping piece 200 are inthe natural state, the bottom edges of the second scraping piece 300 andfirst scraping piece 200 will be lower than the lowest side of the firstroller 140 and the auxiliary roller 150 to ensure the first scrapingpiece 200 and the second scraping piece 300 can abut on the floortightly.

The roller brush cavity of the floor brush assembly 100, the sealingcomponent 131 is arranged between the roller brush 130 and the main base120. The sealing component 131 is above the first scraping piece 200 andthe second scraping piece 300 and on the top of the roller brush cavity160 to reduce or eliminate the gap between the main base 120 and theroller brush cover 130 and improve the sealing performance on the top ofthe roller brush cavity 160, thus improving the vacuum degree of theroller brush cavity 160. Wherein the gap refers to the gap between theroller brush cavity and the outside.

In the embodiment, the first scraping piece 200 and the second scrapingpiece 300 abut on the floor when the floor brush assembly 100 movesbackward, with a seal structure being formed jointly by the firstscraping piece 200, the second scraping piece 300 and the sealingcomponent 131 to improve the vacuum degree of the roller brush cavity160, thus improving the dirt collecting performance of the suction inlet170 and the cleaning performance.

Specifically, when the first bumps 210 are arranged on the firstscraping piece 200 and the floor brush assembly 100 moves on a carpet,particularly when the floor brush assembly 100 moves backward, as theheight of the first channel H1 between the first bumps 210 is small, thefirst channel H1 can be filled up with the fluff of the carpet, makinghigh vacuum degree in the roller brush cavity 160.

Understandably, if no first bumps 210 on the first scraping piece 200,the vacuum degree of the roller brush cavity 160 is higher than thesituation where the first bumps 210 are provided.

Referring to FIG. 2 , the roller brush 110 is on the main base 120 andon the front side to which the floor brush assembly 100 moves forward.The main base 120 has two supporting ends 121. The two ends of theroller brush 110 are supported on the two supporting ends 121. One endis the active end and connects with the motor built in the floor brushassembly 100 which powers rotation of the roller brush 110. The otherend is the passive end and supports the roller brush 110.

The mounting positions for the sealing component 131 include the innerside of the roller brush cover 130, the main base 120 and the rollerbrush cover 130 and the main base 120.

In the embodiment, by referring to FIG. 5 , preferably, the sealingcomponent is on the inner side of the roller brush cover 130 anddistributed on the end close to the roller brush 110. The sealingcomponent 131 is distributed symmetrically and extends along thecircumferential direction of the roller brush 110. The inner side of theroller brush cover 130 is provided with a pair of bearing parts 132 witha slot through which the sealing component 131 is arranged on thebearing parts 132. The bearing part 132 is rib plate-shaped.

The structure of the floor brush assembly 100 has been described indetail. Technicians in this field should understand the working processas below:

When the floor brush assembly 100 moves forward, the second bumps 310 ofthe second scraping piece 300 abut on the floor and the first face 2011of the first scraping piece body 201 abuts on the floor; meanwhile, thegap between the second bumps 310 allow water stain and/or dirt to passthrough and be sucked into the suction inlet. The first scraping piecebody 201 can push the water stain and/or dirt on the floor to thesuction inlet (the water stain being pushed to the suction inlet).

When the floor brush assembly 100 moves backward, the third face of thesecond scraping piece 300 abuts on the floor and the first bumps 210abut on the floor; meanwhile, the second scraping piece 300 can push thewater stain on the floor to the roller brush 110 to make the water stainbe sucked into the suction inlet, and the gap between the dirt bumps 210can allow the water stain on the floor to pass through and be suckedinto the suction inlet.

Therefore, the solutions can effectively avoid a line of dirt on thefloor as the dirt can’t be fully cleared by the floor brush assembly100. At the same time, the solutions can reduce residual water stain onthe floor and provide good cleaning performance.

The present invention provides a cleaning equipment (not shown in theFigures) which includes the floor brush assembly.

Obviously, the embodiments are some embodiments of the presentinvention, not covering embodiments. According to the embodiments of thepresent invention, the common technicians in the field can make otherforms of changes or modifications without doing any creative works. Thechanges and modifications should be in the scope of protection of theinvention

It is to be understood, however, that even though numerouscharacteristics and advantages of the present invention have been setforth in the foregoing description, together with details of thestructure and function of the invention, the disclosure is illustrativeonly, and changes may be made in detail, especially in matters of shape,size, and arrangement of parts within the principles of the invention tothe full extent indicated by the broad general meaning of the terms inwhich the appended claims are expressed.

1. A floor brush assembly for cleaning surfaces to be cleaned, with theforward direction of the floor brush assembly being the front and theopposite direction being the back; comprising: a floor brush base; aroller brush with a roller being arranged on the floor brush base; andthe second scraping piece which is arranged on the bottom of the floorbrush base and in front of the roller brush and has at least two secondbumps distributed at intervals along its length direction; wherein atleast the roller brush abuts on the surface to be cleaned when the floorbrush assembly moves forward, with a second channel for dirt passingthrough being formed between the adjacent second bumps to make dirtreach the suction inlet of the floor brush base.
 2. The floor brushassembly as claimed in claim 1, wherein the bottom of the second bumpsabuts on the surface to be cleaned when the floor brush assembly movesforward.
 3. The floor brush assembly as claimed in claim 2, wherein thesecond scraping piece comprises a second scraping piece body on thebottom of the floor brush base and the second bumps distributed atintervals on the second scraping piece body; the second scraping piecebody is provided with a second mounting part on the side away from thesurface to be cleaned to connect with the floor brush base and a secondabutting part to abut on the surface to be cleaned, with the secondabutting part and the second mounting part being distributed oppositely;wherein the second scraping piece body swings backward under externalforce so that the second bumps abut on the surface to be cleaned and thesecond scraping piece is in the fourth state at the moment when thefloor brush assembly moves forward; wherein the second scraping piecebody swings forward under external force so that the second abuttingpart abuts on the surface to be cleaned and the second scraping piece isin the third state at the moment when the floor brush assembly movesbackward.
 4. The floor brush assembly as claimed in claim 3, wherein thesecond scraping piece body is sheet-shaped and is provided with thethird face close to the roller brush and the fourth face away from theroller brush, with the second bumps being arranged on the fourth face;wherein the second abutting part is provided with an abutting face toabut on the surface to be cleaned and the abutting face of the secondabutting part can be either the third face or the face adjacent to thebottom between the third face and the fourth face.
 5. The floor brushassembly as claimed in claim 3, wherein the second scraping piece ismade from deformable materials, wherein the external force is thefriction between the second scraping piece body and the surface to becleaned; or the second scraping piece is made from hard materials,wherein the external force is from the driver on the floor brush base,which is configured to facilitate switching of the second scraping piecebetween the third state and the fourth state.
 6. The floor brushassembly as in claim 3, wherein when the second scraping piece is madefrom deformable materials, the floor brush base is provided with anextension baffle on front of the second scraping piece, wherein thebottom edge of the extension baffle is lower than the second mountingpart; when the floor brush assembly moves backward, the second bumpsabut on the bottom edge of the extension baffle; wherein the extensionbaffle is configured to exert pressure down to the second scraping piecein the third state so as to make the second scraping piece abut on thesurface to be cleaned tightly.
 7. The floor brush assembly as claimed inclaim 5, wherein when the second scraping piece is made from hardmaterials, the second scraping piece is hinged to the bottom of thefloor brush base through the second mounting part.
 8. The floor brushassembly as claimed in claim 7, the floor brush base is provided withstop blocks to limit the swing angle of the second scraping piece;wherein the stop blocks are one pair, with one of the stop blocks beingarranged on the floor brush base and on the side of the second mountingpart away from the roller brush to limit the swing angle when the secondscraping piece swings forward and the other stop block being arranged onthe floor brush base and on the side of the second mounting part closeto the roller brush to limit the swing angle when the second scrapingpiece swings backward; or, wherein the number of the stop block is onewhich is provided with the second limitation face close to the rollerbrush and the first limitation face away from the roller brush; when thesecond scraping piece swings forward, the second scraping piece abuttingon the first limitation face; when the second scraping piece swingsbackward, the second scraping piece abutting on the second limitationface.
 9. The floor brush assembly as claimed in claim 1, wherein thefirst scraping assembly is arranged on the bottom of the floor brushbase and behind the roller brush, with a suction inlet being formedbetween the first scraping piece and the roller brush; wherein the firstscraping piece abuts on the surface to be cleaned to scrape off dirtwhen the floor brush assembly moves forward and/or backward.
 10. Thefloor brush assembly as claimed in claim 5, wherein the first scrapingassembly is arranged on the bottom of the floor brush base and behindthe roller brush, with a suction inlet being formed between the firstscraping piece and the roller brush; with at least two first bumps beingarranged on the face away from the roller brush and distributed atintervals on the length direction of the first scraping piece; whereinthe second scraping piece abuts on the surface to be cleaned and thefirst bump abuts on the surface to be cleaned when the floor brushassembly moves backward, with a first channel for dirt passing throughbeing formed between the adjacent first bumps to make dirt reach thesuction inlet.
 11. The floor brush assembly as claimed in claim 9,wherein the first and auxiliary rollers are arranged on the bottom ofthe floor brush base and the second scraping piece and first scrapingpiece remain suspended in natural state; wherein the bottom edges of thesecond scraping piece and the first scraping piece are lower than thelowest side of the first and auxiliary rollers when the second scrapingpiece and the first scraping piece are in natural state.
 12. The floorbrush assembly as claimed in claim 9, wherein the floor brush basecomprises the main base and the detachable roller brush cover on themain base, which form a roller brush cavity to hold the roller brush;the sealing element is arranged between the roller brush cover and themain base, on the top of the roller brush cover and/or the main base andon the top of the roller brush cavity for reducing or eliminating thegap between the main base and the roller brush cover so as to enhancethe sealing performance of the top of the roller brush cavity.
 13. Thefloor brush assembly as claimed in claim 12, wherein the first scrapingpiece and the second scraping piece abut on the surface to be cleanedwhen the floor brush assembly moves backward component, with a sealstructure being formed jointly by the first scraping piece, the secondscraping piece and the sealing to improve the vacuum degree of theroller brush cavity.
 14. The floor brush assembly as claimed in claim12, wherein the sealing component is arranged on the inner side of theroller brush cover and close to the end of the roller brush; wherein thesealing component extends along the circumferential direction of theroller brush.
 15. The floor brush assembly as claimed in claim 12,wherein the second scraping piece is arranged on the inner side of theroller brush cover and comprises a second mounting part which isarranged on the side of the second scraping piece body away from thesurface to be cleaned; with an insertion part being arranged on theinner side of the roller brush cover to match with the second mountingpart and the second scraping piece being installed on the inner side ofthe roller brush cover by the second mounting part matching with theabutting part.